Well i can tell you what i think: music isn't math and whoever told you that is wrong.

To further underline the point: entire cultures' musical traditions don't follow the circle of fifths, or notation as you're likely familiar with it, or even notes that follow the kinds of ratios you might use to describe western musical scales of any kind. The mathematical representations of western music were applied in retrospect, math never played any role in the development of western music anyway.

So considering math was never a factor in the development of western music and the math used to describe western music doesn't even apply universally, i just can't really consider "music is math" to be a meaningful statement at all